Split protocol package into exchange, asset-proxy, and multisig

1 files changed, 0 insertions, 1285 deletions

diff --git a/contracts/protocol/test/asset_proxy/proxies.ts b/contracts/protocol/test/asset_proxy/proxies.ts
deleted file mode 100644
index c34be9c6a..000000000
--- a/contracts/protocol/test/asset_proxy/proxies.ts
+++ /dev/null
@@ -1,1285 +0,0 @@
-import { artifacts as interfacesArtifacts, IAssetDataContract, IAssetProxyContract } from '@0x/contracts-interfaces';
-import {
-    chaiSetup,
-    constants,
-    expectTransactionFailedAsync,
-    expectTransactionFailedWithoutReasonAsync,
-    LogDecoder,
-    provider,
-    txDefaults,
-    web3Wrapper,
-} from '@0x/contracts-test-utils';
-import {
-    artifacts as tokensArtifacts,
-    DummyERC20TokenContract,
-    DummyERC20TokenTransferEventArgs,
-    DummyERC721ReceiverContract,
-    DummyERC721TokenContract,
-    DummyMultipleReturnERC20TokenContract,
-    DummyNoReturnERC20TokenContract,
-} from '@0x/contracts-tokens';
-import { BlockchainLifecycle } from '@0x/dev-utils';
-import { assetDataUtils } from '@0x/order-utils';
-import { RevertReason } from '@0x/types';
-import { BigNumber } from '@0x/utils';
-import * as chai from 'chai';
-import { LogWithDecodedArgs } from 'ethereum-types';
-import * as _ from 'lodash';
-
-import { ERC20ProxyContract } from '../../generated-wrappers/erc20_proxy';
-import { ERC721ProxyContract } from '../../generated-wrappers/erc721_proxy';
-import { MultiAssetProxyContract } from '../../generated-wrappers/multi_asset_proxy';
-import { artifacts } from '../../src/artifacts';
-import { ERC20Wrapper } from '../utils/erc20_wrapper';
-import { ERC721Wrapper } from '../utils/erc721_wrapper';
-
-chaiSetup.configure();
-const expect = chai.expect;
-const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
-const assetProxyInterface = new IAssetProxyContract(
-    interfacesArtifacts.IAssetProxy.compilerOutput.abi,
-    constants.NULL_ADDRESS,
-    provider,
-);
-const assetDataInterface = new IAssetDataContract(
-    interfacesArtifacts.IAssetData.compilerOutput.abi,
-    constants.NULL_ADDRESS,
-    provider,
-);
-
-// tslint:disable:no-unnecessary-type-assertion
-describe('Asset Transfer Proxies', () => {
-    let owner: string;
-    let notAuthorized: string;
-    let authorized: string;
-    let fromAddress: string;
-    let toAddress: string;
-
-    let erc20TokenA: DummyERC20TokenContract;
-    let erc20TokenB: DummyERC20TokenContract;
-    let erc721TokenA: DummyERC721TokenContract;
-    let erc721TokenB: DummyERC721TokenContract;
-    let erc721Receiver: DummyERC721ReceiverContract;
-    let erc20Proxy: ERC20ProxyContract;
-    let erc721Proxy: ERC721ProxyContract;
-    let noReturnErc20Token: DummyNoReturnERC20TokenContract;
-    let multipleReturnErc20Token: DummyMultipleReturnERC20TokenContract;
-    let multiAssetProxy: MultiAssetProxyContract;
-
-    let erc20Wrapper: ERC20Wrapper;
-    let erc721Wrapper: ERC721Wrapper;
-    let erc721AFromTokenId: BigNumber;
-    let erc721BFromTokenId: BigNumber;
-
-    before(async () => {
-        await blockchainLifecycle.startAsync();
-    });
-    after(async () => {
-        await blockchainLifecycle.revertAsync();
-    });
-    before(async () => {
-        const accounts = await web3Wrapper.getAvailableAddressesAsync();
-        const usedAddresses = ([owner, notAuthorized, authorized, fromAddress, toAddress] = _.slice(accounts, 0, 5));
-
-        erc20Wrapper = new ERC20Wrapper(provider, usedAddresses, owner);
-        erc721Wrapper = new ERC721Wrapper(provider, usedAddresses, owner);
-
-        // Deploy AssetProxies
-        erc20Proxy = await erc20Wrapper.deployProxyAsync();
-        erc721Proxy = await erc721Wrapper.deployProxyAsync();
-        multiAssetProxy = await MultiAssetProxyContract.deployFrom0xArtifactAsync(
-            artifacts.MultiAssetProxy,
-            provider,
-            txDefaults,
-        );
-
-        // Configure ERC20Proxy
-        await web3Wrapper.awaitTransactionSuccessAsync(
-            await erc20Proxy.addAuthorizedAddress.sendTransactionAsync(authorized, {
-                from: owner,
-            }),
-            constants.AWAIT_TRANSACTION_MINED_MS,
-        );
-        await web3Wrapper.awaitTransactionSuccessAsync(
-            await erc20Proxy.addAuthorizedAddress.sendTransactionAsync(multiAssetProxy.address, {
-                from: owner,
-            }),
-            constants.AWAIT_TRANSACTION_MINED_MS,
-        );
-
-        // Configure ERC721Proxy
-        await web3Wrapper.awaitTransactionSuccessAsync(
-            await erc721Proxy.addAuthorizedAddress.sendTransactionAsync(authorized, {
-                from: owner,
-            }),
-            constants.AWAIT_TRANSACTION_MINED_MS,
-        );
-        await web3Wrapper.awaitTransactionSuccessAsync(
-            await erc721Proxy.addAuthorizedAddress.sendTransactionAsync(multiAssetProxy.address, {
-                from: owner,
-            }),
-            constants.AWAIT_TRANSACTION_MINED_MS,
-        );
-
-        // Configure MultiAssetProxy
-        await web3Wrapper.awaitTransactionSuccessAsync(
-            await multiAssetProxy.addAuthorizedAddress.sendTransactionAsync(authorized, {
-                from: owner,
-            }),
-            constants.AWAIT_TRANSACTION_MINED_MS,
-        );
-        await web3Wrapper.awaitTransactionSuccessAsync(
-            await multiAssetProxy.registerAssetProxy.sendTransactionAsync(erc20Proxy.address, {
-                from: owner,
-            }),
-            constants.AWAIT_TRANSACTION_MINED_MS,
-        );
-        await web3Wrapper.awaitTransactionSuccessAsync(
-            await multiAssetProxy.registerAssetProxy.sendTransactionAsync(erc721Proxy.address, {
-                from: owner,
-            }),
-            constants.AWAIT_TRANSACTION_MINED_MS,
-        );
-
-        // Deploy and configure ERC20 tokens
-        const numDummyErc20ToDeploy = 2;
-        [erc20TokenA, erc20TokenB] = await erc20Wrapper.deployDummyTokensAsync(
-            numDummyErc20ToDeploy,
-            constants.DUMMY_TOKEN_DECIMALS,
-        );
-        noReturnErc20Token = await DummyNoReturnERC20TokenContract.deployFrom0xArtifactAsync(
-            tokensArtifacts.DummyNoReturnERC20Token,
-            provider,
-            txDefaults,
-            constants.DUMMY_TOKEN_NAME,
-            constants.DUMMY_TOKEN_SYMBOL,
-            constants.DUMMY_TOKEN_DECIMALS,
-            constants.DUMMY_TOKEN_TOTAL_SUPPLY,
-        );
-        multipleReturnErc20Token = await DummyMultipleReturnERC20TokenContract.deployFrom0xArtifactAsync(
-            tokensArtifacts.DummyMultipleReturnERC20Token,
-            provider,
-            txDefaults,
-            constants.DUMMY_TOKEN_NAME,
-            constants.DUMMY_TOKEN_SYMBOL,
-            constants.DUMMY_TOKEN_DECIMALS,
-            constants.DUMMY_TOKEN_TOTAL_SUPPLY,
-        );
-
-        await erc20Wrapper.setBalancesAndAllowancesAsync();
-        await web3Wrapper.awaitTransactionSuccessAsync(
-            await noReturnErc20Token.setBalance.sendTransactionAsync(fromAddress, constants.INITIAL_ERC20_BALANCE),
-            constants.AWAIT_TRANSACTION_MINED_MS,
-        );
-        await web3Wrapper.awaitTransactionSuccessAsync(
-            await noReturnErc20Token.approve.sendTransactionAsync(
-                erc20Proxy.address,
-                constants.INITIAL_ERC20_ALLOWANCE,
-                { from: fromAddress },
-            ),
-            constants.AWAIT_TRANSACTION_MINED_MS,
-        );
-        await web3Wrapper.awaitTransactionSuccessAsync(
-            await multipleReturnErc20Token.setBalance.sendTransactionAsync(
-                fromAddress,
-                constants.INITIAL_ERC20_BALANCE,
-            ),
-            constants.AWAIT_TRANSACTION_MINED_MS,
-        );
-        await web3Wrapper.awaitTransactionSuccessAsync(
-            await multipleReturnErc20Token.approve.sendTransactionAsync(
-                erc20Proxy.address,
-                constants.INITIAL_ERC20_ALLOWANCE,
-                { from: fromAddress },
-            ),
-            constants.AWAIT_TRANSACTION_MINED_MS,
-        );
-
-        // Deploy and configure ERC721 tokens and receiver
-        [erc721TokenA, erc721TokenB] = await erc721Wrapper.deployDummyTokensAsync();
-        erc721Receiver = await DummyERC721ReceiverContract.deployFrom0xArtifactAsync(
-            tokensArtifacts.DummyERC721Receiver,
-            provider,
-            txDefaults,
-        );
-
-        await erc721Wrapper.setBalancesAndAllowancesAsync();
-        const erc721Balances = await erc721Wrapper.getBalancesAsync();
-        erc721AFromTokenId = erc721Balances[fromAddress][erc721TokenA.address][0];
-        erc721BFromTokenId = erc721Balances[fromAddress][erc721TokenB.address][0];
-    });
-    beforeEach(async () => {
-        await blockchainLifecycle.startAsync();
-    });
-    afterEach(async () => {
-        await blockchainLifecycle.revertAsync();
-    });
-
-    describe('ERC20Proxy', () => {
-        it('should revert if undefined function is called', async () => {
-            const undefinedSelector = '0x01020304';
-            await expectTransactionFailedWithoutReasonAsync(
-                web3Wrapper.sendTransactionAsync({
-                    from: owner,
-                    to: erc20Proxy.address,
-                    value: constants.ZERO_AMOUNT,
-                    data: undefinedSelector,
-                }),
-            );
-        });
-        it('should have an id of 0xf47261b0', async () => {
-            const proxyId = await erc20Proxy.getProxyId.callAsync();
-            const expectedProxyId = '0xf47261b0';
-            expect(proxyId).to.equal(expectedProxyId);
-        });
-        describe('transferFrom', () => {
-            it('should successfully transfer tokens', async () => {
-                // Construct ERC20 asset data
-                const encodedAssetData = assetDataUtils.encodeERC20AssetData(erc20TokenA.address);
-                // Perform a transfer from fromAddress to toAddress
-                const erc20Balances = await erc20Wrapper.getBalancesAsync();
-                const amount = new BigNumber(10);
-                const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
-                    encodedAssetData,
-                    fromAddress,
-                    toAddress,
-                    amount,
-                );
-                await web3Wrapper.awaitTransactionSuccessAsync(
-                    await web3Wrapper.sendTransactionAsync({
-                        to: erc20Proxy.address,
-                        data,
-                        from: authorized,
-                    }),
-                    constants.AWAIT_TRANSACTION_MINED_MS,
-                );
-                // Verify transfer was successful
-                const newBalances = await erc20Wrapper.getBalancesAsync();
-                expect(newBalances[fromAddress][erc20TokenA.address]).to.be.bignumber.equal(
-                    erc20Balances[fromAddress][erc20TokenA.address].minus(amount),
-                );
-                expect(newBalances[toAddress][erc20TokenA.address]).to.be.bignumber.equal(
-                    erc20Balances[toAddress][erc20TokenA.address].plus(amount),
-                );
-            });
-
-            it('should successfully transfer tokens that do not return a value', async () => {
-                // Construct ERC20 asset data
-                const encodedAssetData = assetDataUtils.encodeERC20AssetData(noReturnErc20Token.address);
-                // Perform a transfer from fromAddress to toAddress
-                const initialFromBalance = await noReturnErc20Token.balanceOf.callAsync(fromAddress);
-                const initialToBalance = await noReturnErc20Token.balanceOf.callAsync(toAddress);
-                const amount = new BigNumber(10);
-                const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
-                    encodedAssetData,
-                    fromAddress,
-                    toAddress,
-                    amount,
-                );
-                await web3Wrapper.awaitTransactionSuccessAsync(
-                    await web3Wrapper.sendTransactionAsync({
-                        to: erc20Proxy.address,
-                        data,
-                        from: authorized,
-                    }),
-                    constants.AWAIT_TRANSACTION_MINED_MS,
-                );
-                // Verify transfer was successful
-                const newFromBalance = await noReturnErc20Token.balanceOf.callAsync(fromAddress);
-                const newToBalance = await noReturnErc20Token.balanceOf.callAsync(toAddress);
-                expect(newFromBalance).to.be.bignumber.equal(initialFromBalance.minus(amount));
-                expect(newToBalance).to.be.bignumber.equal(initialToBalance.plus(amount));
-            });
-
-            it('should successfully transfer tokens and ignore extra assetData', async () => {
-                // Construct ERC20 asset data
-                const extraData = '0102030405060708';
-                const encodedAssetData = `${assetDataUtils.encodeERC20AssetData(erc20TokenA.address)}${extraData}`;
-                // Perform a transfer from fromAddress to toAddress
-                const erc20Balances = await erc20Wrapper.getBalancesAsync();
-                const amount = new BigNumber(10);
-                const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
-                    encodedAssetData,
-                    fromAddress,
-                    toAddress,
-                    amount,
-                );
-                await web3Wrapper.awaitTransactionSuccessAsync(
-                    await web3Wrapper.sendTransactionAsync({
-                        to: erc20Proxy.address,
-                        data,
-                        from: authorized,
-                    }),
-                    constants.AWAIT_TRANSACTION_MINED_MS,
-                );
-                // Verify transfer was successful
-                const newBalances = await erc20Wrapper.getBalancesAsync();
-                expect(newBalances[fromAddress][erc20TokenA.address]).to.be.bignumber.equal(
-                    erc20Balances[fromAddress][erc20TokenA.address].minus(amount),
-                );
-                expect(newBalances[toAddress][erc20TokenA.address]).to.be.bignumber.equal(
-                    erc20Balances[toAddress][erc20TokenA.address].plus(amount),
-                );
-            });
-
-            it('should do nothing if transferring 0 amount of a token', async () => {
-                // Construct ERC20 asset data
-                const encodedAssetData = assetDataUtils.encodeERC20AssetData(erc20TokenA.address);
-                // Perform a transfer from fromAddress to toAddress
-                const erc20Balances = await erc20Wrapper.getBalancesAsync();
-                const amount = new BigNumber(0);
-                const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
-                    encodedAssetData,
-                    fromAddress,
-                    toAddress,
-                    amount,
-                );
-                await web3Wrapper.awaitTransactionSuccessAsync(
-                    await web3Wrapper.sendTransactionAsync({
-                        to: erc20Proxy.address,
-                        data,
-                        from: authorized,
-                    }),
-                    constants.AWAIT_TRANSACTION_MINED_MS,
-                );
-                // Verify transfer was successful
-                const newBalances = await erc20Wrapper.getBalancesAsync();
-                expect(newBalances[fromAddress][erc20TokenA.address]).to.be.bignumber.equal(
-                    erc20Balances[fromAddress][erc20TokenA.address],
-                );
-                expect(newBalances[toAddress][erc20TokenA.address]).to.be.bignumber.equal(
-                    erc20Balances[toAddress][erc20TokenA.address],
-                );
-            });
-
-            it('should revert if allowances are too low', async () => {
-                // Construct ERC20 asset data
-                const encodedAssetData = assetDataUtils.encodeERC20AssetData(erc20TokenA.address);
-                // Create allowance less than transfer amount. Set allowance on proxy.
-                const allowance = new BigNumber(0);
-                const amount = new BigNumber(10);
-                const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
-                    encodedAssetData,
-                    fromAddress,
-                    toAddress,
-                    amount,
-                );
-                await web3Wrapper.awaitTransactionSuccessAsync(
-                    await erc20TokenA.approve.sendTransactionAsync(erc20Proxy.address, allowance, {
-                        from: fromAddress,
-                    }),
-                    constants.AWAIT_TRANSACTION_MINED_MS,
-                );
-                const erc20Balances = await erc20Wrapper.getBalancesAsync();
-                // Perform a transfer; expect this to fail.
-                await expectTransactionFailedAsync(
-                    web3Wrapper.sendTransactionAsync({
-                        to: erc20Proxy.address,
-                        data,
-                        from: authorized,
-                    }),
-                    RevertReason.TransferFailed,
-                );
-                const newBalances = await erc20Wrapper.getBalancesAsync();
-                expect(newBalances).to.deep.equal(erc20Balances);
-            });
-
-            it('should revert if allowances are too low and token does not return a value', async () => {
-                // Construct ERC20 asset data
-                const encodedAssetData = assetDataUtils.encodeERC20AssetData(noReturnErc20Token.address);
-                // Create allowance less than transfer amount. Set allowance on proxy.
-                const allowance = new BigNumber(0);
-                const amount = new BigNumber(10);
-                const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
-                    encodedAssetData,
-                    fromAddress,
-                    toAddress,
-                    amount,
-                );
-                await web3Wrapper.awaitTransactionSuccessAsync(
-                    await noReturnErc20Token.approve.sendTransactionAsync(erc20Proxy.address, allowance, {
-                        from: fromAddress,
-                    }),
-                    constants.AWAIT_TRANSACTION_MINED_MS,
-                );
-                const initialFromBalance = await noReturnErc20Token.balanceOf.callAsync(fromAddress);
-                const initialToBalance = await noReturnErc20Token.balanceOf.callAsync(toAddress);
-                // Perform a transfer; expect this to fail.
-                await expectTransactionFailedAsync(
-                    web3Wrapper.sendTransactionAsync({
-                        to: erc20Proxy.address,
-                        data,
-                        from: authorized,
-                    }),
-                    RevertReason.TransferFailed,
-                );
-                const newFromBalance = await noReturnErc20Token.balanceOf.callAsync(fromAddress);
-                const newToBalance = await noReturnErc20Token.balanceOf.callAsync(toAddress);
-                expect(newFromBalance).to.be.bignumber.equal(initialFromBalance);
-                expect(newToBalance).to.be.bignumber.equal(initialToBalance);
-            });
-
-            it('should revert if caller is not authorized', async () => {
-                // Construct ERC20 asset data
-                const encodedAssetData = assetDataUtils.encodeERC20AssetData(erc20TokenA.address);
-                // Perform a transfer from fromAddress to toAddress
-                const amount = new BigNumber(10);
-                const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
-                    encodedAssetData,
-                    fromAddress,
-                    toAddress,
-                    amount,
-                );
-                const erc20Balances = await erc20Wrapper.getBalancesAsync();
-                await expectTransactionFailedAsync(
-                    web3Wrapper.sendTransactionAsync({
-                        to: erc20Proxy.address,
-                        data,
-                        from: notAuthorized,
-                    }),
-                    RevertReason.SenderNotAuthorized,
-                );
-                const newBalances = await erc20Wrapper.getBalancesAsync();
-                expect(newBalances).to.deep.equal(erc20Balances);
-            });
-
-            it('should revert if token returns more than 32 bytes', async () => {
-                // Construct ERC20 asset data
-                const encodedAssetData = assetDataUtils.encodeERC20AssetData(multipleReturnErc20Token.address);
-                const amount = new BigNumber(10);
-                const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
-                    encodedAssetData,
-                    fromAddress,
-                    toAddress,
-                    amount,
-                );
-                const initialFromBalance = await multipleReturnErc20Token.balanceOf.callAsync(fromAddress);
-                const initialToBalance = await multipleReturnErc20Token.balanceOf.callAsync(toAddress);
-                // Perform a transfer; expect this to fail.
-                await expectTransactionFailedAsync(
-                    web3Wrapper.sendTransactionAsync({
-                        to: erc20Proxy.address,
-                        data,
-                        from: authorized,
-                    }),
-                    RevertReason.TransferFailed,
-                );
-                const newFromBalance = await multipleReturnErc20Token.balanceOf.callAsync(fromAddress);
-                const newToBalance = await multipleReturnErc20Token.balanceOf.callAsync(toAddress);
-                expect(newFromBalance).to.be.bignumber.equal(initialFromBalance);
-                expect(newToBalance).to.be.bignumber.equal(initialToBalance);
-            });
-        });
-    });
-
-    describe('ERC721Proxy', () => {
-        it('should revert if undefined function is called', async () => {
-            const undefinedSelector = '0x01020304';
-            await expectTransactionFailedWithoutReasonAsync(
-                web3Wrapper.sendTransactionAsync({
-                    from: owner,
-                    to: erc721Proxy.address,
-                    value: constants.ZERO_AMOUNT,
-                    data: undefinedSelector,
-                }),
-            );
-        });
-        it('should have an id of 0x02571792', async () => {
-            const proxyId = await erc721Proxy.getProxyId.callAsync();
-            const expectedProxyId = '0x02571792';
-            expect(proxyId).to.equal(expectedProxyId);
-        });
-        describe('transferFrom', () => {
-            it('should successfully transfer tokens', async () => {
-                // Construct ERC721 asset data
-                const encodedAssetData = assetDataUtils.encodeERC721AssetData(erc721TokenA.address, erc721AFromTokenId);
-                // Verify pre-condition
-                const ownerFromAsset = await erc721TokenA.ownerOf.callAsync(erc721AFromTokenId);
-                expect(ownerFromAsset).to.be.equal(fromAddress);
-                // Perform a transfer from fromAddress to toAddress
-                const amount = new BigNumber(1);
-                const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
-                    encodedAssetData,
-                    fromAddress,
-                    toAddress,
-                    amount,
-                );
-                await web3Wrapper.awaitTransactionSuccessAsync(
-                    await web3Wrapper.sendTransactionAsync({
-                        to: erc721Proxy.address,
-                        data,
-                        from: authorized,
-                    }),
-                    constants.AWAIT_TRANSACTION_MINED_MS,
-                );
-                // Verify transfer was successful
-                const newOwnerFromAsset = await erc721TokenA.ownerOf.callAsync(erc721AFromTokenId);
-                expect(newOwnerFromAsset).to.be.bignumber.equal(toAddress);
-            });
-
-            it('should successfully transfer tokens and ignore extra assetData', async () => {
-                // Construct ERC721 asset data
-                const extraData = '0102030405060708';
-                const encodedAssetData = `${assetDataUtils.encodeERC721AssetData(
-                    erc721TokenA.address,
-                    erc721AFromTokenId,
-                )}${extraData}`;
-                // Verify pre-condition
-                const ownerFromAsset = await erc721TokenA.ownerOf.callAsync(erc721AFromTokenId);
-                expect(ownerFromAsset).to.be.equal(fromAddress);
-                // Perform a transfer from fromAddress to toAddress
-                const amount = new BigNumber(1);
-                const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
-                    encodedAssetData,
-                    fromAddress,
-                    toAddress,
-                    amount,
-                );
-                await web3Wrapper.awaitTransactionSuccessAsync(
-                    await web3Wrapper.sendTransactionAsync({
-                        to: erc721Proxy.address,
-                        data,
-                        from: authorized,
-                    }),
-                    constants.AWAIT_TRANSACTION_MINED_MS,
-                );
-                // Verify transfer was successful
-                const newOwnerFromAsset = await erc721TokenA.ownerOf.callAsync(erc721AFromTokenId);
-                expect(newOwnerFromAsset).to.be.bignumber.equal(toAddress);
-            });
-
-            it('should not call onERC721Received when transferring to a smart contract', async () => {
-                // Construct ERC721 asset data
-                const encodedAssetData = assetDataUtils.encodeERC721AssetData(erc721TokenA.address, erc721AFromTokenId);
-                // Verify pre-condition
-                const ownerFromAsset = await erc721TokenA.ownerOf.callAsync(erc721AFromTokenId);
-                expect(ownerFromAsset).to.be.equal(fromAddress);
-                // Perform a transfer from fromAddress to toAddress
-                const amount = new BigNumber(1);
-                const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
-                    encodedAssetData,
-                    fromAddress,
-                    erc721Receiver.address,
-                    amount,
-                );
-                const logDecoder = new LogDecoder(web3Wrapper, { ...artifacts, ...tokensArtifacts });
-                const tx = await logDecoder.getTxWithDecodedLogsAsync(
-                    await web3Wrapper.sendTransactionAsync({
-                        to: erc721Proxy.address,
-                        data,
-                        from: authorized,
-                        gas: constants.MAX_TRANSFER_FROM_GAS,
-                    }),
-                );
-                // Verify that no log was emitted by erc721 receiver
-                expect(tx.logs.length).to.be.equal(1);
-                // Verify transfer was successful
-                const newOwnerFromAsset = await erc721TokenA.ownerOf.callAsync(erc721AFromTokenId);
-                expect(newOwnerFromAsset).to.be.bignumber.equal(erc721Receiver.address);
-            });
-
-            it('should revert if transferring 0 amount of a token', async () => {
-                // Construct ERC721 asset data
-                const encodedAssetData = assetDataUtils.encodeERC721AssetData(erc721TokenA.address, erc721AFromTokenId);
-                // Verify pre-condition
-                const ownerFromAsset = await erc721TokenA.ownerOf.callAsync(erc721AFromTokenId);
-                expect(ownerFromAsset).to.be.equal(fromAddress);
-                // Perform a transfer from fromAddress to toAddress
-                const amount = new BigNumber(0);
-                const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
-                    encodedAssetData,
-                    fromAddress,
-                    toAddress,
-                    amount,
-                );
-                await expectTransactionFailedAsync(
-                    web3Wrapper.sendTransactionAsync({
-                        to: erc721Proxy.address,
-                        data,
-                        from: authorized,
-                    }),
-                    RevertReason.InvalidAmount,
-                );
-                const newOwner = await erc721TokenA.ownerOf.callAsync(erc721AFromTokenId);
-                expect(newOwner).to.be.equal(ownerFromAsset);
-            });
-
-            it('should revert if transferring > 1 amount of a token', async () => {
-                // Construct ERC721 asset data
-                const encodedAssetData = assetDataUtils.encodeERC721AssetData(erc721TokenA.address, erc721AFromTokenId);
-                // Verify pre-condition
-                const ownerFromAsset = await erc721TokenA.ownerOf.callAsync(erc721AFromTokenId);
-                expect(ownerFromAsset).to.be.equal(fromAddress);
-                // Perform a transfer from fromAddress to toAddress
-                const amount = new BigNumber(500);
-                const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
-                    encodedAssetData,
-                    fromAddress,
-                    toAddress,
-                    amount,
-                );
-                await expectTransactionFailedAsync(
-                    web3Wrapper.sendTransactionAsync({
-                        to: erc721Proxy.address,
-                        data,
-                        from: authorized,
-                    }),
-                    RevertReason.InvalidAmount,
-                );
-                const newOwner = await erc721TokenA.ownerOf.callAsync(erc721AFromTokenId);
-                expect(newOwner).to.be.equal(ownerFromAsset);
-            });
-
-            it('should revert if allowances are too low', async () => {
-                // Construct ERC721 asset data
-                const encodedAssetData = assetDataUtils.encodeERC721AssetData(erc721TokenA.address, erc721AFromTokenId);
-                // Verify pre-condition
-                const ownerFromAsset = await erc721TokenA.ownerOf.callAsync(erc721AFromTokenId);
-                expect(ownerFromAsset).to.be.equal(fromAddress);
-                // Remove transfer approval for fromAddress.
-                await web3Wrapper.awaitTransactionSuccessAsync(
-                    await erc721TokenA.approve.sendTransactionAsync(constants.NULL_ADDRESS, erc721AFromTokenId, {
-                        from: fromAddress,
-                    }),
-                    constants.AWAIT_TRANSACTION_MINED_MS,
-                );
-                // Perform a transfer; expect this to fail.
-                const amount = new BigNumber(1);
-                const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
-                    encodedAssetData,
-                    fromAddress,
-                    toAddress,
-                    amount,
-                );
-                await expectTransactionFailedAsync(
-                    web3Wrapper.sendTransactionAsync({
-                        to: erc721Proxy.address,
-                        data,
-                        from: authorized,
-                    }),
-                    RevertReason.TransferFailed,
-                );
-                const newOwner = await erc721TokenA.ownerOf.callAsync(erc721AFromTokenId);
-                expect(newOwner).to.be.equal(ownerFromAsset);
-            });
-
-            it('should revert if caller is not authorized', async () => {
-                // Construct ERC721 asset data
-                const encodedAssetData = assetDataUtils.encodeERC721AssetData(erc721TokenA.address, erc721AFromTokenId);
-                // Verify pre-condition
-                const ownerFromAsset = await erc721TokenA.ownerOf.callAsync(erc721AFromTokenId);
-                expect(ownerFromAsset).to.be.equal(fromAddress);
-                // Perform a transfer from fromAddress to toAddress
-                const amount = new BigNumber(1);
-                const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
-                    encodedAssetData,
-                    fromAddress,
-                    toAddress,
-                    amount,
-                );
-                await expectTransactionFailedAsync(
-                    web3Wrapper.sendTransactionAsync({
-                        to: erc721Proxy.address,
-                        data,
-                        from: notAuthorized,
-                    }),
-                    RevertReason.SenderNotAuthorized,
-                );
-                const newOwner = await erc721TokenA.ownerOf.callAsync(erc721AFromTokenId);
-                expect(newOwner).to.be.equal(ownerFromAsset);
-            });
-        });
-    });
-    describe('MultiAssetProxy', () => {
-        it('should revert if undefined function is called', async () => {
-            const undefinedSelector = '0x01020304';
-            await expectTransactionFailedWithoutReasonAsync(
-                web3Wrapper.sendTransactionAsync({
-                    from: owner,
-                    to: multiAssetProxy.address,
-                    value: constants.ZERO_AMOUNT,
-                    data: undefinedSelector,
-                }),
-            );
-        });
-        it('should have an id of 0x94cfcdd7', async () => {
-            const proxyId = await multiAssetProxy.getProxyId.callAsync();
-            // first 4 bytes of `keccak256('MultiAsset(uint256[],bytes[])')`
-            const expectedProxyId = '0x94cfcdd7';
-            expect(proxyId).to.equal(expectedProxyId);
-        });
-        describe('transferFrom', () => {
-            it('should transfer a single ERC20 token', async () => {
-                const inputAmount = new BigNumber(1);
-                const erc20Amount = new BigNumber(10);
-                const erc20AssetData = assetDataUtils.encodeERC20AssetData(erc20TokenA.address);
-                const amounts = [erc20Amount];
-                const nestedAssetData = [erc20AssetData];
-                const assetData = assetDataUtils.encodeMultiAssetData(amounts, nestedAssetData);
-                const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
-                    assetData,
-                    fromAddress,
-                    toAddress,
-                    inputAmount,
-                );
-                const erc20Balances = await erc20Wrapper.getBalancesAsync();
-                await web3Wrapper.awaitTransactionSuccessAsync(
-                    await web3Wrapper.sendTransactionAsync({
-                        to: multiAssetProxy.address,
-                        data,
-                        from: authorized,
-                    }),
-                    constants.AWAIT_TRANSACTION_MINED_MS,
-                );
-                const newBalances = await erc20Wrapper.getBalancesAsync();
-                const totalAmount = inputAmount.times(erc20Amount);
-                expect(newBalances[fromAddress][erc20TokenA.address]).to.be.bignumber.equal(
-                    erc20Balances[fromAddress][erc20TokenA.address].minus(totalAmount),
-                );
-                expect(newBalances[toAddress][erc20TokenA.address]).to.be.bignumber.equal(
-                    erc20Balances[toAddress][erc20TokenA.address].plus(totalAmount),
-                );
-            });
-            it('should dispatch an ERC20 transfer when input amount is 0', async () => {
-                const inputAmount = constants.ZERO_AMOUNT;
-                const erc20Amount = new BigNumber(10);
-                const erc20AssetData = assetDataUtils.encodeERC20AssetData(erc20TokenA.address);
-                const amounts = [erc20Amount];
-                const nestedAssetData = [erc20AssetData];
-                const assetData = assetDataInterface.MultiAsset.getABIEncodedTransactionData(amounts, nestedAssetData);
-                const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
-                    assetData,
-                    fromAddress,
-                    toAddress,
-                    inputAmount,
-                );
-                const erc20Balances = await erc20Wrapper.getBalancesAsync();
-                const logDecoder = new LogDecoder(web3Wrapper, { ...artifacts, ...tokensArtifacts });
-                const tx = await logDecoder.getTxWithDecodedLogsAsync(
-                    await web3Wrapper.sendTransactionAsync({
-                        to: multiAssetProxy.address,
-                        data,
-                        from: authorized,
-                    }),
-                );
-                expect(tx.logs.length).to.be.equal(1);
-                const log = tx.logs[0] as LogWithDecodedArgs<DummyERC20TokenTransferEventArgs>;
-                const transferEventName = 'Transfer';
-                expect(log.event).to.equal(transferEventName);
-                expect(log.args._value).to.be.bignumber.equal(constants.ZERO_AMOUNT);
-                const newBalances = await erc20Wrapper.getBalancesAsync();
-                expect(newBalances).to.deep.equal(erc20Balances);
-            });
-            it('should successfully transfer multiple of the same ERC20 token', async () => {
-                const inputAmount = new BigNumber(1);
-                const erc20Amount1 = new BigNumber(10);
-                const erc20Amount2 = new BigNumber(20);
-                const erc20AssetData1 = assetDataUtils.encodeERC20AssetData(erc20TokenA.address);
-                const erc20AssetData2 = assetDataUtils.encodeERC20AssetData(erc20TokenA.address);
-                const amounts = [erc20Amount1, erc20Amount2];
-                const nestedAssetData = [erc20AssetData1, erc20AssetData2];
-                const assetData = assetDataUtils.encodeMultiAssetData(amounts, nestedAssetData);
-                const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
-                    assetData,
-                    fromAddress,
-                    toAddress,
-                    inputAmount,
-                );
-                const erc20Balances = await erc20Wrapper.getBalancesAsync();
-                await web3Wrapper.awaitTransactionSuccessAsync(
-                    await web3Wrapper.sendTransactionAsync({
-                        to: multiAssetProxy.address,
-                        data,
-                        from: authorized,
-                    }),
-                    constants.AWAIT_TRANSACTION_MINED_MS,
-                );
-                const newBalances = await erc20Wrapper.getBalancesAsync();
-                const totalAmount = inputAmount.times(erc20Amount1).plus(inputAmount.times(erc20Amount2));
-                expect(newBalances[fromAddress][erc20TokenA.address]).to.be.bignumber.equal(
-                    erc20Balances[fromAddress][erc20TokenA.address].minus(totalAmount),
-                );
-                expect(newBalances[toAddress][erc20TokenA.address]).to.be.bignumber.equal(
-                    erc20Balances[toAddress][erc20TokenA.address].plus(totalAmount),
-                );
-            });
-            it('should successfully transfer multiple different ERC20 tokens', async () => {
-                const inputAmount = new BigNumber(1);
-                const erc20Amount1 = new BigNumber(10);
-                const erc20Amount2 = new BigNumber(20);
-                const erc20AssetData1 = assetDataUtils.encodeERC20AssetData(erc20TokenA.address);
-                const erc20AssetData2 = assetDataUtils.encodeERC20AssetData(erc20TokenB.address);
-                const amounts = [erc20Amount1, erc20Amount2];
-                const nestedAssetData = [erc20AssetData1, erc20AssetData2];
-                const assetData = assetDataUtils.encodeMultiAssetData(amounts, nestedAssetData);
-                const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
-                    assetData,
-                    fromAddress,
-                    toAddress,
-                    inputAmount,
-                );
-                const erc20Balances = await erc20Wrapper.getBalancesAsync();
-                await web3Wrapper.awaitTransactionSuccessAsync(
-                    await web3Wrapper.sendTransactionAsync({
-                        to: multiAssetProxy.address,
-                        data,
-                        from: authorized,
-                    }),
-                    constants.AWAIT_TRANSACTION_MINED_MS,
-                );
-                const newBalances = await erc20Wrapper.getBalancesAsync();
-                const totalErc20AAmount = inputAmount.times(erc20Amount1);
-                const totalErc20BAmount = inputAmount.times(erc20Amount2);
-                expect(newBalances[fromAddress][erc20TokenA.address]).to.be.bignumber.equal(
-                    erc20Balances[fromAddress][erc20TokenA.address].minus(totalErc20AAmount),
-                );
-                expect(newBalances[toAddress][erc20TokenA.address]).to.be.bignumber.equal(
-                    erc20Balances[toAddress][erc20TokenA.address].plus(totalErc20AAmount),
-                );
-                expect(newBalances[fromAddress][erc20TokenB.address]).to.be.bignumber.equal(
-                    erc20Balances[fromAddress][erc20TokenB.address].minus(totalErc20BAmount),
-                );
-                expect(newBalances[toAddress][erc20TokenB.address]).to.be.bignumber.equal(
-                    erc20Balances[toAddress][erc20TokenB.address].plus(totalErc20BAmount),
-                );
-            });
-            it('should transfer a single ERC721 token', async () => {
-                const inputAmount = new BigNumber(1);
-                const erc721Amount = new BigNumber(1);
-                const erc721AssetData = assetDataUtils.encodeERC721AssetData(erc721TokenA.address, erc721AFromTokenId);
-                const amounts = [erc721Amount];
-                const nestedAssetData = [erc721AssetData];
-                const assetData = assetDataUtils.encodeMultiAssetData(amounts, nestedAssetData);
-                const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
-                    assetData,
-                    fromAddress,
-                    toAddress,
-                    inputAmount,
-                );
-                const ownerFromAsset = await erc721TokenA.ownerOf.callAsync(erc721AFromTokenId);
-                expect(ownerFromAsset).to.be.equal(fromAddress);
-                await web3Wrapper.awaitTransactionSuccessAsync(
-                    await web3Wrapper.sendTransactionAsync({
-                        to: multiAssetProxy.address,
-                        data,
-                        from: authorized,
-                    }),
-                    constants.AWAIT_TRANSACTION_MINED_MS,
-                );
-                const newOwnerFromAsset = await erc721TokenA.ownerOf.callAsync(erc721AFromTokenId);
-                expect(newOwnerFromAsset).to.be.equal(toAddress);
-            });
-            it('should successfully transfer multiple of the same ERC721 token', async () => {
-                const erc721Balances = await erc721Wrapper.getBalancesAsync();
-                const erc721AFromTokenId2 = erc721Balances[fromAddress][erc721TokenA.address][1];
-                const erc721AssetData1 = assetDataUtils.encodeERC721AssetData(erc721TokenA.address, erc721AFromTokenId);
-                const erc721AssetData2 = assetDataUtils.encodeERC721AssetData(
-                    erc721TokenA.address,
-                    erc721AFromTokenId2,
-                );
-                const inputAmount = new BigNumber(1);
-                const erc721Amount = new BigNumber(1);
-                const amounts = [erc721Amount, erc721Amount];
-                const nestedAssetData = [erc721AssetData1, erc721AssetData2];
-                const assetData = assetDataUtils.encodeMultiAssetData(amounts, nestedAssetData);
-                const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
-                    assetData,
-                    fromAddress,
-                    toAddress,
-                    inputAmount,
-                );
-                const ownerFromAsset1 = await erc721TokenA.ownerOf.callAsync(erc721AFromTokenId);
-                expect(ownerFromAsset1).to.be.equal(fromAddress);
-                const ownerFromAsset2 = await erc721TokenA.ownerOf.callAsync(erc721AFromTokenId2);
-                expect(ownerFromAsset2).to.be.equal(fromAddress);
-                await web3Wrapper.awaitTransactionSuccessAsync(
-                    await web3Wrapper.sendTransactionAsync({
-                        to: multiAssetProxy.address,
-                        data,
-                        from: authorized,
-                        gas: constants.MAX_TRANSFER_FROM_GAS,
-                    }),
-                    constants.AWAIT_TRANSACTION_MINED_MS,
-                );
-                const newOwnerFromAsset1 = await erc721TokenA.ownerOf.callAsync(erc721AFromTokenId);
-                const newOwnerFromAsset2 = await erc721TokenA.ownerOf.callAsync(erc721AFromTokenId2);
-                expect(newOwnerFromAsset1).to.be.equal(toAddress);
-                expect(newOwnerFromAsset2).to.be.equal(toAddress);
-            });
-            it('should successfully transfer multiple different ERC721 tokens', async () => {
-                const erc721AssetData1 = assetDataUtils.encodeERC721AssetData(erc721TokenA.address, erc721AFromTokenId);
-                const erc721AssetData2 = assetDataUtils.encodeERC721AssetData(erc721TokenB.address, erc721BFromTokenId);
-                const inputAmount = new BigNumber(1);
-                const erc721Amount = new BigNumber(1);
-                const amounts = [erc721Amount, erc721Amount];
-                const nestedAssetData = [erc721AssetData1, erc721AssetData2];
-                const assetData = assetDataUtils.encodeMultiAssetData(amounts, nestedAssetData);
-                const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
-                    assetData,
-                    fromAddress,
-                    toAddress,
-                    inputAmount,
-                );
-                const ownerFromAsset1 = await erc721TokenA.ownerOf.callAsync(erc721AFromTokenId);
-                expect(ownerFromAsset1).to.be.equal(fromAddress);
-                const ownerFromAsset2 = await erc721TokenB.ownerOf.callAsync(erc721BFromTokenId);
-                expect(ownerFromAsset2).to.be.equal(fromAddress);
-                await web3Wrapper.awaitTransactionSuccessAsync(
-                    await web3Wrapper.sendTransactionAsync({
-                        to: multiAssetProxy.address,
-                        data,
-                        from: authorized,
-                        gas: constants.MAX_TRANSFER_FROM_GAS,
-                    }),
-                    constants.AWAIT_TRANSACTION_MINED_MS,
-                );
-                const newOwnerFromAsset1 = await erc721TokenA.ownerOf.callAsync(erc721AFromTokenId);
-                const newOwnerFromAsset2 = await erc721TokenB.ownerOf.callAsync(erc721BFromTokenId);
-                expect(newOwnerFromAsset1).to.be.equal(toAddress);
-                expect(newOwnerFromAsset2).to.be.equal(toAddress);
-            });
-            it('should successfully transfer a combination of ERC20 and ERC721 tokens', async () => {
-                const inputAmount = new BigNumber(1);
-                const erc20Amount = new BigNumber(10);
-                const erc20AssetData = assetDataUtils.encodeERC20AssetData(erc20TokenA.address);
-                const erc721Amount = new BigNumber(1);
-                const erc721AssetData = assetDataUtils.encodeERC721AssetData(erc721TokenA.address, erc721AFromTokenId);
-                const amounts = [erc20Amount, erc721Amount];
-                const nestedAssetData = [erc20AssetData, erc721AssetData];
-                const assetData = assetDataUtils.encodeMultiAssetData(amounts, nestedAssetData);
-                const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
-                    assetData,
-                    fromAddress,
-                    toAddress,
-                    inputAmount,
-                );
-                const erc20Balances = await erc20Wrapper.getBalancesAsync();
-                const ownerFromAsset = await erc721TokenA.ownerOf.callAsync(erc721AFromTokenId);
-                expect(ownerFromAsset).to.be.equal(fromAddress);
-                await web3Wrapper.awaitTransactionSuccessAsync(
-                    await web3Wrapper.sendTransactionAsync({
-                        to: multiAssetProxy.address,
-                        data,
-                        from: authorized,
-                    }),
-                    constants.AWAIT_TRANSACTION_MINED_MS,
-                );
-                const newBalances = await erc20Wrapper.getBalancesAsync();
-                const totalAmount = inputAmount.times(erc20Amount);
-                expect(newBalances[fromAddress][erc20TokenA.address]).to.be.bignumber.equal(
-                    erc20Balances[fromAddress][erc20TokenA.address].minus(totalAmount),
-                );
-                expect(newBalances[toAddress][erc20TokenA.address]).to.be.bignumber.equal(
-                    erc20Balances[toAddress][erc20TokenA.address].plus(totalAmount),
-                );
-                const newOwnerFromAsset = await erc721TokenA.ownerOf.callAsync(erc721AFromTokenId);
-                expect(newOwnerFromAsset).to.be.equal(toAddress);
-            });
-            it('should successfully transfer tokens and ignore extra assetData', async () => {
-                const inputAmount = new BigNumber(1);
-                const erc20Amount = new BigNumber(10);
-                const erc20AssetData = assetDataUtils.encodeERC20AssetData(erc20TokenA.address);
-                const erc721Amount = new BigNumber(1);
-                const erc721AssetData = assetDataUtils.encodeERC721AssetData(erc721TokenA.address, erc721AFromTokenId);
-                const amounts = [erc20Amount, erc721Amount];
-                const nestedAssetData = [erc20AssetData, erc721AssetData];
-                const extraData = '0102030405060708';
-                const assetData = `${assetDataUtils.encodeMultiAssetData(amounts, nestedAssetData)}${extraData}`;
-                const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
-                    assetData,
-                    fromAddress,
-                    toAddress,
-                    inputAmount,
-                );
-                const erc20Balances = await erc20Wrapper.getBalancesAsync();
-                const ownerFromAsset = await erc721TokenA.ownerOf.callAsync(erc721AFromTokenId);
-                expect(ownerFromAsset).to.be.equal(fromAddress);
-                await web3Wrapper.awaitTransactionSuccessAsync(
-                    await web3Wrapper.sendTransactionAsync({
-                        to: multiAssetProxy.address,
-                        data,
-                        from: authorized,
-                    }),
-                    constants.AWAIT_TRANSACTION_MINED_MS,
-                );
-                const newBalances = await erc20Wrapper.getBalancesAsync();
-                const totalAmount = inputAmount.times(erc20Amount);
-                expect(newBalances[fromAddress][erc20TokenA.address]).to.be.bignumber.equal(
-                    erc20Balances[fromAddress][erc20TokenA.address].minus(totalAmount),
-                );
-                expect(newBalances[toAddress][erc20TokenA.address]).to.be.bignumber.equal(
-                    erc20Balances[toAddress][erc20TokenA.address].plus(totalAmount),
-                );
-                const newOwnerFromAsset = await erc721TokenA.ownerOf.callAsync(erc721AFromTokenId);
-                expect(newOwnerFromAsset).to.be.equal(toAddress);
-            });
-            it('should successfully transfer correct amounts when the `amount` > 1', async () => {
-                const inputAmount = new BigNumber(100);
-                const erc20Amount1 = new BigNumber(10);
-                const erc20Amount2 = new BigNumber(20);
-                const erc20AssetData1 = assetDataUtils.encodeERC20AssetData(erc20TokenA.address);
-                const erc20AssetData2 = assetDataUtils.encodeERC20AssetData(erc20TokenB.address);
-                const amounts = [erc20Amount1, erc20Amount2];
-                const nestedAssetData = [erc20AssetData1, erc20AssetData2];
-                const assetData = assetDataUtils.encodeMultiAssetData(amounts, nestedAssetData);
-                const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
-                    assetData,
-                    fromAddress,
-                    toAddress,
-                    inputAmount,
-                );
-                const erc20Balances = await erc20Wrapper.getBalancesAsync();
-                await web3Wrapper.awaitTransactionSuccessAsync(
-                    await web3Wrapper.sendTransactionAsync({
-                        to: multiAssetProxy.address,
-                        data,
-                        from: authorized,
-                    }),
-                    constants.AWAIT_TRANSACTION_MINED_MS,
-                );
-                const newBalances = await erc20Wrapper.getBalancesAsync();
-                const totalErc20AAmount = inputAmount.times(erc20Amount1);
-                const totalErc20BAmount = inputAmount.times(erc20Amount2);
-                expect(newBalances[fromAddress][erc20TokenA.address]).to.be.bignumber.equal(
-                    erc20Balances[fromAddress][erc20TokenA.address].minus(totalErc20AAmount),
-                );
-                expect(newBalances[toAddress][erc20TokenA.address]).to.be.bignumber.equal(
-                    erc20Balances[toAddress][erc20TokenA.address].plus(totalErc20AAmount),
-                );
-                expect(newBalances[fromAddress][erc20TokenB.address]).to.be.bignumber.equal(
-                    erc20Balances[fromAddress][erc20TokenB.address].minus(totalErc20BAmount),
-                );
-                expect(newBalances[toAddress][erc20TokenB.address]).to.be.bignumber.equal(
-                    erc20Balances[toAddress][erc20TokenB.address].plus(totalErc20BAmount),
-                );
-            });
-            it('should successfully transfer a large amount of tokens', async () => {
-                const inputAmount = new BigNumber(1);
-                const erc20Amount1 = new BigNumber(10);
-                const erc20Amount2 = new BigNumber(20);
-                const erc20AssetData1 = assetDataUtils.encodeERC20AssetData(erc20TokenA.address);
-                const erc20AssetData2 = assetDataUtils.encodeERC20AssetData(erc20TokenB.address);
-                const erc721Amount = new BigNumber(1);
-                const erc721Balances = await erc721Wrapper.getBalancesAsync();
-                const erc721AFromTokenId2 = erc721Balances[fromAddress][erc721TokenA.address][1];
-                const erc721BFromTokenId2 = erc721Balances[fromAddress][erc721TokenB.address][1];
-                const erc721AssetData1 = assetDataUtils.encodeERC721AssetData(erc721TokenA.address, erc721AFromTokenId);
-                const erc721AssetData2 = assetDataUtils.encodeERC721AssetData(
-                    erc721TokenA.address,
-                    erc721AFromTokenId2,
-                );
-                const erc721AssetData3 = assetDataUtils.encodeERC721AssetData(erc721TokenB.address, erc721BFromTokenId);
-                const erc721AssetData4 = assetDataUtils.encodeERC721AssetData(
-                    erc721TokenB.address,
-                    erc721BFromTokenId2,
-                );
-                const amounts = [erc721Amount, erc20Amount1, erc721Amount, erc20Amount2, erc721Amount, erc721Amount];
-                const nestedAssetData = [
-                    erc721AssetData1,
-                    erc20AssetData1,
-                    erc721AssetData2,
-                    erc20AssetData2,
-                    erc721AssetData3,
-                    erc721AssetData4,
-                ];
-                const assetData = assetDataUtils.encodeMultiAssetData(amounts, nestedAssetData);
-                const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
-                    assetData,
-                    fromAddress,
-                    toAddress,
-                    inputAmount,
-                );
-                const ownerFromAsset1 = await erc721TokenA.ownerOf.callAsync(erc721AFromTokenId);
-                expect(ownerFromAsset1).to.be.equal(fromAddress);
-                const ownerFromAsset2 = await erc721TokenA.ownerOf.callAsync(erc721AFromTokenId2);
-                expect(ownerFromAsset2).to.be.equal(fromAddress);
-                const ownerFromAsset3 = await erc721TokenB.ownerOf.callAsync(erc721BFromTokenId);
-                expect(ownerFromAsset3).to.be.equal(fromAddress);
-                const ownerFromAsset4 = await erc721TokenB.ownerOf.callAsync(erc721BFromTokenId2);
-                expect(ownerFromAsset4).to.be.equal(fromAddress);
-                const erc20Balances = await erc20Wrapper.getBalancesAsync();
-                await web3Wrapper.awaitTransactionSuccessAsync(
-                    await web3Wrapper.sendTransactionAsync({
-                        to: multiAssetProxy.address,
-                        data,
-                        from: authorized,
-                        gas: constants.MAX_EXECUTE_TRANSACTION_GAS,
-                    }),
-                    constants.AWAIT_TRANSACTION_MINED_MS,
-                );
-                const newOwnerFromAsset1 = await erc721TokenA.ownerOf.callAsync(erc721AFromTokenId);
-                const newOwnerFromAsset2 = await erc721TokenA.ownerOf.callAsync(erc721AFromTokenId2);
-                const newOwnerFromAsset3 = await erc721TokenB.ownerOf.callAsync(erc721BFromTokenId);
-                const newOwnerFromAsset4 = await erc721TokenB.ownerOf.callAsync(erc721BFromTokenId2);
-                expect(newOwnerFromAsset1).to.be.equal(toAddress);
-                expect(newOwnerFromAsset2).to.be.equal(toAddress);
-                expect(newOwnerFromAsset3).to.be.equal(toAddress);
-                expect(newOwnerFromAsset4).to.be.equal(toAddress);
-                const newBalances = await erc20Wrapper.getBalancesAsync();
-                const totalErc20AAmount = inputAmount.times(erc20Amount1);
-                const totalErc20BAmount = inputAmount.times(erc20Amount2);
-                expect(newBalances[fromAddress][erc20TokenA.address]).to.be.bignumber.equal(
-                    erc20Balances[fromAddress][erc20TokenA.address].minus(totalErc20AAmount),
-                );
-                expect(newBalances[toAddress][erc20TokenA.address]).to.be.bignumber.equal(
-                    erc20Balances[toAddress][erc20TokenA.address].plus(totalErc20AAmount),
-                );
-                expect(newBalances[fromAddress][erc20TokenB.address]).to.be.bignumber.equal(
-                    erc20Balances[fromAddress][erc20TokenB.address].minus(totalErc20BAmount),
-                );
-                expect(newBalances[toAddress][erc20TokenB.address]).to.be.bignumber.equal(
-                    erc20Balances[toAddress][erc20TokenB.address].plus(totalErc20BAmount),
-                );
-            });
-            it('should revert if a single transfer fails', async () => {
-                const inputAmount = new BigNumber(1);
-                const erc20Amount = new BigNumber(10);
-                const erc20AssetData = assetDataUtils.encodeERC20AssetData(erc20TokenA.address);
-                // 2 is an invalid erc721 amount
-                const erc721Amount = new BigNumber(2);
-                const erc721AssetData = assetDataUtils.encodeERC721AssetData(erc721TokenA.address, erc721AFromTokenId);
-                const amounts = [erc20Amount, erc721Amount];
-                const nestedAssetData = [erc20AssetData, erc721AssetData];
-                const assetData = assetDataUtils.encodeMultiAssetData(amounts, nestedAssetData);
-                const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
-                    assetData,
-                    fromAddress,
-                    toAddress,
-                    inputAmount,
-                );
-                await expectTransactionFailedAsync(
-                    web3Wrapper.sendTransactionAsync({
-                        to: multiAssetProxy.address,
-                        data,
-                        from: authorized,
-                    }),
-                    RevertReason.InvalidAmount,
-                );
-            });
-            it('should revert if an AssetProxy is not registered', async () => {
-                const inputAmount = new BigNumber(1);
-                const erc20Amount = new BigNumber(10);
-                const erc20AssetData = assetDataUtils.encodeERC20AssetData(erc20TokenA.address);
-                const erc721Amount = new BigNumber(1);
-                const erc721AssetData = assetDataUtils.encodeERC721AssetData(erc721TokenA.address, erc721AFromTokenId);
-                const invalidProxyId = '0x12345678';
-                const invalidErc721AssetData = `${invalidProxyId}${erc721AssetData.slice(10)}`;
-                const amounts = [erc20Amount, erc721Amount];
-                const nestedAssetData = [erc20AssetData, invalidErc721AssetData];
-                // HACK: This is used to get around validation built into assetDataUtils
-                const assetData = assetDataInterface.MultiAsset.getABIEncodedTransactionData(amounts, nestedAssetData);
-                const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
-                    assetData,
-                    fromAddress,
-                    toAddress,
-                    inputAmount,
-                );
-                await expectTransactionFailedAsync(
-                    web3Wrapper.sendTransactionAsync({
-                        to: multiAssetProxy.address,
-                        data,
-                        from: authorized,
-                    }),
-                    RevertReason.AssetProxyDoesNotExist,
-                );
-            });
-            it('should revert if the length of `amounts` does not match the length of `nestedAssetData`', async () => {
-                const inputAmount = new BigNumber(1);
-                const erc20Amount = new BigNumber(10);
-                const erc20AssetData = assetDataUtils.encodeERC20AssetData(erc20TokenA.address);
-                const erc721AssetData = assetDataUtils.encodeERC721AssetData(erc721TokenA.address, erc721AFromTokenId);
-                const amounts = [erc20Amount];
-                const nestedAssetData = [erc20AssetData, erc721AssetData];
-                // HACK: This is used to get around validation built into assetDataUtils
-                const assetData = assetDataInterface.MultiAsset.getABIEncodedTransactionData(amounts, nestedAssetData);
-                const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
-                    assetData,
-                    fromAddress,
-                    toAddress,
-                    inputAmount,
-                );
-                await expectTransactionFailedAsync(
-                    web3Wrapper.sendTransactionAsync({
-                        to: multiAssetProxy.address,
-                        data,
-                        from: authorized,
-                    }),
-                    RevertReason.LengthMismatch,
-                );
-            });
-            it('should revert if amounts multiplication results in an overflow', async () => {
-                const inputAmount = new BigNumber(2).pow(128);
-                const erc20Amount = new BigNumber(2).pow(128);
-                const erc20AssetData = assetDataUtils.encodeERC20AssetData(erc20TokenA.address);
-                const amounts = [erc20Amount];
-                const nestedAssetData = [erc20AssetData];
-                const assetData = assetDataUtils.encodeMultiAssetData(amounts, nestedAssetData);
-                const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
-                    assetData,
-                    fromAddress,
-                    toAddress,
-                    inputAmount,
-                );
-                await expectTransactionFailedAsync(
-                    web3Wrapper.sendTransactionAsync({
-                        to: multiAssetProxy.address,
-                        data,
-                        from: authorized,
-                    }),
-                    RevertReason.Uint256Overflow,
-                );
-            });
-            it('should revert if an element of `nestedAssetData` is < 4 bytes long', async () => {
-                const inputAmount = new BigNumber(1);
-                const erc20Amount = new BigNumber(10);
-                const erc20AssetData = assetDataUtils.encodeERC20AssetData(erc20TokenA.address);
-                const erc721Amount = new BigNumber(1);
-                const erc721AssetData = '0x123456';
-                const amounts = [erc20Amount, erc721Amount];
-                const nestedAssetData = [erc20AssetData, erc721AssetData];
-                // HACK: This is used to get around validation built into assetDataUtils
-                const assetData = assetDataInterface.MultiAsset.getABIEncodedTransactionData(amounts, nestedAssetData);
-                const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
-                    assetData,
-                    fromAddress,
-                    toAddress,
-                    inputAmount,
-                );
-                await expectTransactionFailedAsync(
-                    web3Wrapper.sendTransactionAsync({
-                        to: multiAssetProxy.address,
-                        data,
-                        from: authorized,
-                    }),
-                    RevertReason.LengthGreaterThan3Required,
-                );
-            });
-            it('should revert if caller is not authorized', async () => {
-                const inputAmount = new BigNumber(1);
-                const erc20Amount = new BigNumber(10);
-                const erc20AssetData = assetDataUtils.encodeERC20AssetData(erc20TokenA.address);
-                const erc721Amount = new BigNumber(1);
-                const erc721AssetData = assetDataUtils.encodeERC721AssetData(erc721TokenA.address, erc721AFromTokenId);
-                const amounts = [erc20Amount, erc721Amount];
-                const nestedAssetData = [erc20AssetData, erc721AssetData];
-                const assetData = assetDataUtils.encodeMultiAssetData(amounts, nestedAssetData);
-                const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
-                    assetData,
-                    fromAddress,
-                    toAddress,
-                    inputAmount,
-                );
-                await expectTransactionFailedAsync(
-                    web3Wrapper.sendTransactionAsync({
-                        to: multiAssetProxy.address,
-                        data,
-                        from: notAuthorized,
-                    }),
-                    RevertReason.SenderNotAuthorized,
-                );
-            });
-        });
-    });
-});
-// tslint:enable:no-unnecessary-type-assertion
-// tslint:disable:max-file-line-count